I’ve been traveling solo, and enjoying an uncommon pleasure — staying with friends.

Some I’ve known for 30 years, some less.

I have been away a long time, working and playing in other countries, from India to America.

These friends all have families, some with children and dogs and cats at home. Others would be called empty nesters, because their children are young adults, away at university or in new careers. The nests are still filled with all the trophies and ribbons of childhood accomplishments, and — lucky for me — many photos showing the children’s happy development, their travels, friendships, and milestones of youth.

I’m struck by a common pose in these photos: A child is hugging friends for the camera, all with big grins, all flashing that hope and promise of soon-to-be adulthood.

It’s the same in every home, no matter the family’s origins or circumstances.